1 /* GStreamer 2 * Copyright (C) <2005> Julien Moutte <julien@moutte.net> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public 15 * License along with this library; if not, write to the 16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef __GST_XV_IMAGE_SINK_H__ 21 #define __GST_XV_IMAGE_SINK_H__ 22 23 #include <gst/video/gstvideosink.h> 24 25 /* Helper functions */ 26 #include <gst/video/video.h> 27 28 G_BEGIN_DECLS 29 #define GST_TYPE_XV_IMAGE_SINK \ 30 (gst_xv_image_sink_get_type()) 31 #define GST_XV_IMAGE_SINK(obj) \ 32 (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_XV_IMAGE_SINK, GstXvImageSink)) 33 #define GST_XV_IMAGE_SINK_CLASS(klass) \ 34 (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_XV_IMAGE_SINK, GstXvImageSinkClass)) 35 #define GST_IS_XV_IMAGE_SINK(obj) \ 36 (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_XV_IMAGE_SINK)) 37 #define GST_IS_XV_IMAGE_SINK_CLASS(klass) \ 38 (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_XV_IMAGE_SINK)) 39 40 typedef struct _GstXvImageSink GstXvImageSink; 41 typedef struct _GstXvImageSinkClass GstXvImageSinkClass; 42 43 #include "xvimageallocator.h" 44 #include "xvimagepool.h" 45 #include "xvcontext.h" 46 47 /** 48 * GstXvImageSink: 49 * @display_name: the name of the Display we want to render to 50 * @xvcontext: our instance's #GstXvContext 51 * @xwindow: the #GstXWindow we are rendering to 52 * @cur_image: a reference to the last #GstXvImage that was put to @xwindow. It 53 * is used when Expose events are received to redraw the latest video frame 54 * @event_thread: a thread listening for events on @xwindow and handling them 55 * @running: used to inform @event_thread if it should run/shutdown 56 * @fps_n: the framerate fraction numerator 57 * @fps_d: the framerate fraction denominator 58 * @x_lock: used to protect X calls as we are not using the XLib in threaded 59 * mode 60 * @flow_lock: used to protect data flow routines from external calls such as 61 * events from @event_thread or methods from the #GstVideoOverlay interface 62 * @par: used to override calculated pixel aspect ratio from @xvcontext 63 * @pool_lock: used to protect the buffer pool 64 * @image_pool: a list of #GstXvImageBuffer that could be reused at next buffer 65 * allocation call 66 * @synchronous: used to store if XSynchronous should be used or not (for 67 * debugging purpose only) 68 * @keep_aspect: used to remember if reverse negotiation scaling should respect 69 * aspect ratio 70 * @handle_events: used to know if we should handle select XEvents or not 71 * @brightness: used to store the user settings for color balance brightness 72 * @contrast: used to store the user settings for color balance contrast 73 * @hue: used to store the user settings for color balance hue 74 * @saturation: used to store the user settings for color balance saturation 75 * @cb_changed: used to store if the color balance settings where changed 76 * @video_width: the width of incoming video frames in pixels 77 * @video_height: the height of incoming video frames in pixels 78 * 79 * The #GstXvImageSink data structure. 80 */ 81 struct _GstXvImageSink 82 { 83 /* Our element stuff */ 84 GstVideoSink videosink; 85 86 GstXvContextConfig config; 87 GstXvContext *context; 88 GstXvImageAllocator *allocator; 89 GstXWindow *xwindow; 90 GstBuffer *cur_image; 91 92 GThread *event_thread; 93 gboolean running; 94 95 GstVideoInfo info; 96 97 /* Framerate numerator and denominator */ 98 gint fps_n; 99 gint fps_d; 100 101 GMutex flow_lock; 102 103 /* object-set pixel aspect ratio */ 104 GValue *par; 105 106 /* the buffer pool */ 107 GstBufferPool *pool; 108 109 gboolean synchronous; 110 gboolean double_buffer; 111 gboolean keep_aspect; 112 gboolean redraw_border; 113 gboolean handle_events; 114 gboolean handle_expose; 115 116 /* size of incoming video, used as the size for XvImage */ 117 guint video_width, video_height; 118 119 gboolean draw_borders; 120 121 /* stream metadata */ 122 gchar *media_title; 123 124 /* saved render rectangle until we have a window */ 125 gboolean pending_render_rect; 126 GstVideoRectangle render_rect; 127 }; 128 129 struct _GstXvImageSinkClass 130 { 131 GstVideoSinkClass parent_class; 132 }; 133 134 GType gst_xv_image_sink_get_type (void); 135 136 G_END_DECLS 137 #endif /* __GST_XV_IMAGE_SINK_H__ */ 138